Metal packing for piston-rods



(No Model.)

s. ARMSTRONG. METAL PAGKING FOR PISTON RODS. No. 274,165. l Patented Mala-20, 1883.

SamuqZ Z'WMm/gg UNIT D STATES PATENT OFFICE.

SAMUEL ARMSTRONG, OF NEWARK, NEW JERSEY.

ME.TAL PACKING FOR PISTON-RODS.

- SPECIFICATION forming part of Letters Patent No. 274,165, dated March 20, 1883.

' Application filed January 20, 1883. (No model.)

To all whom it may concern Be it known that I, SAMUEL ARMSTRONG, a

citizenof the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Metal Packings for Piston- Rods; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyin g drawings, and to letters of reference marked thereon, which form apartofthis specification.

The Object of this invention is to provide a more durable and efiicient packing for pistonrods, and one in which allowance is made for the lateral vibration of the rod when the same is out of line.

The invention consists in the combinations and arrangements of parts, substantially as will be hereinafter set forth, and finally embodied in the claims.

. Referringto the accompanying drawings, in which similar letters of reference indicate like parts in each of r the several figures, Figure 1 isaside elevation of a stuffing-box with a series of rings and other mechanism embodying my improvements, said parts being broken away to show a sectional view thereof. Fig.2 is a plan of an end ring having sockets'therein; Fig. 3 is a plan of a bar or plate adapted to have one end arranged in one ofsaid sockets.

Fig. 4 is a side view of aninnerand outer ring in engagement, and Fig. 5 is aplan of another end rin-g receiving the other end of the beforementioncd bar.

. In said drawings, a is a stuffing-box as ordinarily arranged on an engine-cylinder, said cylinder having the ordinary studs, 1). Within said box are arran'ged the various parts, as will he hereinafter described. Against the head of the stuffing-box is placed a spring, 8, pref: erably spiral in form. Next in order are arranged the solid ring 0, a series of inner and outer rings, n m, and the solid ring 0, which bears against the plate (I. Said solid or uncut ring 0 may be provided with a flange, p, which projects inward toward the head of the box, and forms a socket adaptedto' receive the spring and hold the same from contact with y the rod. Said ring is also formed to allow the passage of steam from the cylinder into the forward part of the box. Said passage may be gained by forming apertures r in the said ring. The rings at a illustratedin Figs. 1 and 4 are right angular when viewed in section, and can be thus manufactured more cheaply than when beveled. The inner ring bears directly on the rod and takes the wear therefrom. The outer or binding rin g, m, encircles the inner ring, holding the same in position and covering the joints therein. Thejoints between the inner and outer rings are or are intended to be perfectly steam-tight. Said rings or n are duplicated and arranged in a series, as indicated in Fig. 1, the cuts in each contiguous ringbeing broken by the ring laterally adjacent. After the rings m a, I arrange a ring, 0, preferably with sockets f, corresponding to the recesses r. Said ring 6 is uncut, or is preferably so, and is equal in width to the space he tion therewith. Within said space, at several points therein, are arranged said bars 1) and springs t, the ends of said bars being arranged and working within the recesses and sockets f and r, and said springs bearing against the side walls of the box.

The action of the device is as follows: The

springs hold the several rings in close lateral engagement and against the plate 01, and the springs and platesp t hold the cutrings against the red. It is not necessary that the said springs be of any great strength, but of enough strength to hold the parts together. The steam when the piston-head is driven from the stuffin g-box, passes through the rod-aperture 12 into the chamber back of the rings at n, and, hearing against said rings, holds them against the rod. In the reverse action of the piston-head the pressure of the steam will be removed and the springs s t will be sufficient to hold the parts together. The joint between the plate at and parts 0 e beingsteam-tight, exit of steam is prevented at that'point.

It will be apparent that the arrangement of 2 V wanes the rings at it allows any lateral action of the rod, and that the rings 0 and a may be formed to allow said action.

The joint between the plate (I and parts 0 6, above described, may be packed, it necessary, or ground, so as to be perfectly steam-tight, as above set forth.

Having thus described my invention, what I claim, and wish to secure by Letters Patent, is-

1. The combination, with the box a, of a packing composed oi'inner right-angular rings, 4%, and a binding-ring, m, snrroundingthe same, and means adapted to hold the said rin gs into operative connection with the rod, all as herein set forth and shown.

2. In combination, the solid rings 0 o and cut inner and outer rings, on n, and a spring adapted to hold said rings m it against the rod, substantially as herein set forth and shown.

3. The combination, with the box a, having the plate 07, secured against the end thereof, forming a steam-tight joint therewith, of the solid rings 6 0, right-angular ring a, bindingring m, spring .9, placed at the head of the box and tendin g to throw said rings forward against said plate d, and mechanism adapted to hold the rings at it against therqd, as herein setforth and shown.

4. A piston-packing composed of a series of right-angular rings having a steam-chamber between said series and the box, whereby the steam may force the rings against the rod, as set forth.

In testimony that I claim the foregoing 1 have hereunto set my hand this 9ih day of January, 1883.

v SAMUEL ARMSTRONG.

Witnesses: I

OLIVER DRAKE, F. F. CAMPBELL. 

